Projectile is a project interaction library for Emacs. Its goal is to provide a nice set of features operating on a project level without introducing external dependencies. For instance - finding project files is done in pure Emacs Lisp without the use of GNU find.

This library provides easy project management and navigation. The concept of a project is pretty basic - just a folder containing special file. Currently git, mercurial and bazaar repos are considered projects by default. If you want to mark a folder manually as a project just create an empty .projectile file in it. Some of projectile's features: